Mill-pinion.



Mmm/aai Feb.29,1916.

2 SHEETS-SHEET 2 MILL PINION. AAPPLICATION FILED IAN. 4. 1916.

WALTER S. MUKEE, 0F CHICAGO, AND WESLEY G'. NICHOLS AND ALFRED H. EXTON, 0F

CHICAGO HEIGHTS, ILLINOIS, .ASSIGNGRS 10 .AMERICAN MANGANESE STEEL UOM- PANY, 0F AUGUSTA, lllAlINE, A CQRPO TION F MAINE.

MILL-PEN 10N.

intense'.

Specification of ettera Patent.

Application led January 1i, 1916. Serial Ito. 70,263. l

To all whom t may concern.'

Be it known that we, WALTER S. McKee, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of lllinois, and WESLEY Gr. Nronons and ALFRED H. EXTON, citizens of the United States, and residents of Chicago Heights, county of Cook, andv State oi Illinois, vhave made andy invented certain new and useful improvements in Mill-Pintion.

ions, of which the following is a speciica-` This invention relates to mill` rollsl Handy pinions, `and particularly to that type having the shaft formed in two parts, this type having recently come into prominence, due to 4the fact that the remote and power transmitting ends of the shaft may each occupy a posit1on within the drag of themold during casting, also because of the economy which may be obtained by substituting a new half-shaft for a broken one, should a portion of the pinion fail in service. With the shaft formed. in two arts, there is danger 4oit the half-shafts sipping within the toothed shell, particularly so when the pinionor roll is driven from one end, owing to the enormous power which must he transnited from the half-shaft to the toothed s e An object of our invention, therefore, is to provide a construction wherein the full e'ect and beneit of the4 entire surfaces in contact, loetweenl the two halt-shafts and,

the shell, willbe-olotained. This is obtained by providing for the directv transmission otpower between the adjoining ends ot the halt-shafts, and from loothy halt-shafts to the toothed shell, the transmission of power from the one half-shaft to the shell taking place4 in a manner exactly similar to the transmission of power from thel two half shafts to the shell when the mill pinion or roll is driven from both endsof the halfshaits. The attainment of these objects relieves `the key of high and excessive strains,

llikelihocni of failure and eliminates all thereof.

A further object is to obtain the `abovementioned ends in a simple, practical and expeditious manner, and with these and other objects in view, our invention resides in the' combination. and arrangement of parts and in the details of construction here- 'tweeng' Fig. lis a view in si in described and shown, it hein understood that. changes in the precise em cent of the invention can loe made 'withinthe scope vPatenten nee. an, raie.

of what is claimed, without departing from the spirit thereof. lin the drawings, the referred embodiment of our invention is 'sclosed, wherein: Figure 1 is a view in longitual section ot a millpinion or roll embodying the characteristic nteatures of our invention; lig. 2 f

is a view in cross-section thereof, taken on mental view in perspective -o the adjoining ends ci the half-shafts showing the interlocking arrangement thereof, providing for the direct transmission of` owertherehed elevation and partially in section ci a mill pinion or roll having a slightly modied form ot' secure- .rnent and interloclng arrangementloetween the confronting and adjoining ends ot the half-shafts; Fig. 5 is a view in section taken on the line 5-5 ot Fig. d; Fig. Gis airagmental view in perspective of the interlocking ends of this type of half-shafts; Fig. 7' is a view in longitudinal section ot a somewhat further modified i'orm of mill 'pinion or roll embodying, however, the characterlistie features and essential ideas of our invention; Fig. 8 is a tragmental view in section similar to fl, thepinion or rail in section taken on the line 9-9 ot Fig. 8; and Fig. 10 is a iragmental view 1n perspec- -tive oi one oi the confronting ends of the halt-shafts.

Referring specically to the several views, the mill pinion disclosedin Figs. 1 to 3 inelusive, is formed with the two half-shafts 10-11, each oi .whichincludes the walohler or power-transmitting ends 12, intermedte journal portions 13 vand the flanged shellreceivin portions 1li; these half-shafts are icc in a broad sense, to indicate the outstanding i I gear teeth of avmill pinion orthe continuousand circumferential teeth of a mill roll.v The shell 16 and adjoining ends of the halfshafts-gare provided with the slots l?,

iet

55 heing' rotated through @00; Fig. 9 1s view 4 s failing in service,

.which is secured the key 18. The shell 16 is shrunk upon the adjoining ends of the half-shafts, thereby relieving the key 18' of considerable strains and stresses.

In those instances where the mill pinion is driven from one end, the enormous forces brought to bear upon the toothed shell 16 oftentimes cause the half-shaft to break loose within the shell. In order to render feasible the driving of the mill pinion from one end, without likelihood of the pinion we have provided the confronting ends 14 of the half-shaftswith the forwardly projecting segments 19, the formation of which defines interlockin fingers', substantially semi-cylindrical in form, as illustrated in Fig. 3. The toothed shell 16 is provided with the usual end recesses 20, which of the half-shafts therein, the spacing of the flanges and the depth of said recesses being such that the ends of the half-shafts are held a slight distance apart, defining the clearance space 21 therebetween.

A. somewhat modified form of construction is illustrated in Figs. L1, 5 and 6; in

this instance the adjoining and confronting ends 22-23 of the half-shafts being provided with the registering projections and recesses 24F-25 respectively. This construction provides for the direct transmission of power from the one half-shaft to the other, so that if only one of the halfeshafts be driven,'power will betransmitted from both half-shafts to the toothed shell in a manner precisely similar to the transmission of power in the construction above described.

The mill pinion or roll illustrated in Figs.

`7 to 10 inclusive is also formed for the transmission of power between the halfshafts and from the two half-shafts to the -toothed shell, the latter action being de pendent upon the friction between the surfaces of the shell and half-shafts caused by the shrinking of the former upon the latter. In this type of mill pinion, 26 are provided with theusual.- journal portions 13, power-transmitting ends 12 and iianges ll The toothed shell 16 is shrunk upon the adjoining ends of the half-shafts vand is secured thereto by thekey 18. The

adjoining ends of the half-shafts are provided with theregistering notches or depressions 28, which are adapted to receive therein the inwardly projecting lugs 29 formed integral with the toothed shell 16. These lugs 29 of the shell being formed of manganese steeel, are not subject to failure under strains which would result in the deare adapted to receive the flanges 15 the half-shafts]l December, 1915.

struction of the key 18. This construction provides for the transmission of powerfrom one of the half-shafts to the other, and from both half-shafts to the toothed shell. WithV the mill pinions or rolls as herein described,

should any portion thereof become broken,v

shell secured to and spanning the juncture between said half-shafts, and interlocking means at theends of said half-shafts providing for the transmission of power therebetween.

3. An article of the class described comprising alined half-shafts, a toothed shell carried thereby, said half-shafts formed for the direct transmission of powervtherebetween.

4. A mill pinion or roll comprising hollow alined half-shafts, a toothed shell carried thereby, said half-shafts rovided at their confronting ends with interlocking means providing for the transmission of power therebetween.'y

5. An article of the class described coml prising two \hollow alined half-shafts, a toothed shell carried thereby, the confronting ends of said half-shafts provided with interengaging members providing for the direct transmission of power therebetween.

Signed at Chicago, in the county of Cook and State of Illinois, this 27th day of December, 1915. l

WALTER S. MCKEE.

Witnesses:

EUGENE C. BAUER, NELLLE C. BAsoN. Signed at Chicago Heights, county of Cook and. State of Illinois, this 27 day of WESLEY G. NICHOLS, Witnesses:

M. I. LA ZELLE,

CHARLES FAHTSHAR. -I Signed at Chicago Heights, county of Cook and State of Illinois, this 27 lday of December, 1915.

` ALFRED H. AEX'ION. Witnesses:

E. C. EDEIAN, l C. C. UHEHAMER. 

